2111121203 has 4 divisors (see below), whose sum is σ = 2113502160. Its totient is φ = 2108740248.

The previous prime is 2111121197. The next prime is 2111121209. The reversal of 2111121203 is 3021211112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2111121197) and next prime (2111121209).

It is a cyclic number.

It is not a de Polignac number, because 2111121203 - 2⁶ = 2111121139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111121209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189148 + ... + 1190921.

It is an arithmetic number, because the mean of its divisors is an integer number (528375540).

Almost surely, 2^2111121203 is an apocalyptic number.

2111121203 is a deficient number, since it is larger than the sum of its proper divisors (2380957).

2111121203 is an equidigital number, since it uses as much as digits as its factorization.

2111121203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380956.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2111121203 is about 45946.9389948884. The cubic root of 2111121203 is about 1282.8357545616.

Adding to 2111121203 its reverse (3021211112), we get a palindrome (5132332315).

The spelling of 2111121203 in words is "two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred three".